x402-fh — API catalog

Heuristic on-chain token safety check

Screen a wallet/contract address for risk

Fuzzy-screen one name against OFAC SDN + Consolidated

Screen up to 25 names in one call

Full OFAC dossier for one entity

Maritime screening: vessels by name, call sign, IMO, flag

Recent list changes (adds/removals/modifications)

Deliverability-signals check for one email address

Recent-window SEC Form 4 insider transactions (buys/sells), newest first — filter by transaction code, minimum USD value, and insider role

All ~30 currencies at the most recent ECB daily reference fixing, rebased to any covered currency — dated, attributed, agent-clean JSON

Cheapest-chain ranking: all supported chains by all-in USD tx cost

Cluster-buy screen — issuers where >=N distinct insiders made open-market purchases within an M-day span; the classic bullish setup, precomputed

IPO registration withdrawals (Form RW) with time-in-registration — the market risk-sentiment tape

Imminent IPO listings inferred from SEC EFFECT notices and 8-A12B exchange registrations — strongest signals first

Recently priced IPOs with parsed 424(b) terms — price per share, share counts, gross proceeds, exchange and ticker, each with source evidence

US IPO pipeline — companies currently in registration (S-1/F-1), filterable by stage, recency, SIC and domestic/foreign

Resolve an institutional manager name (Berkshire, Scion, Pershing...) to its SEC 13F filer CIK over the ~8,800-manager directory

Deterministic 8-bit SFX synthesis from a preset + seed — base64 WAV plus the reproducible SFXR parameter block

Crypto address screening vs the FULL live OFAC SDN list, segmented by chain (bitcoin, evm, tron, +9 more) — EVM adds on-chain signals (contract, fresh wallet) → 0-100 risk score

SEC company profile — resolve a ticker or CIK to identity, SIC/industry, filer category, HQ, and recent-filing cadence, cross-linked to the SEC suite

Live Chainlink oracle spot price for a pair (latestRoundData, on-chain)

Any PDF (≤10 MB) extracted to one clean plain-text string — in-Worker pdf.js, no upstream

Live ENS forward/reverse resolution, text records, multichain profiles, and dereferenced avatars behind x402. Forward-resolve $0.001; reverse, text records $0.002; avatar $0.003; full profile $0.005; batch of 10 $0.01. USDC on Base, x402 v2, no API keys.

Email deliverability-signals check — RFC5322 syntax + live MX/SPF/DMARC (DoH) + disposable/role/free-provider/unicode flags. Signals, not an SMTP guarantee

One EUR-triangulated cross-rate with inverse and auditable EUR legs, latest or any date back to 1999

Semantic icon search across 12,900+ open-licensed icons (Lucide, Heroicons, Tabler, Feather, Simple Icons) — describe an intent, get ranked candidates with licenses; fetch render-ready inline SVG / data-URI / JSX or multi-icon sprites.

Aggregate insider-flow analytics for one issuer — open-market buy vs sell net flow, non-open-market breakdown, cluster-buy detection, and a per-insider ledger

Phishing / malicious-URL screen — URLhaus blocklist snapshot + deterministic live heuristics (punycode/homograph, brand lookalike, URL shape, opt-in redirect chain)

Minecraft block data — properties, id, hardness, best tool/tier, tags & metadata for any block by name or id, structured JSON

Newest headlines from a deduped multi-source pile (GDELT + Hacker News + major RSS + Google News), newest first — filter by category, source, and language

Current gas market for one chain — bid-ready EIP-1559 fees + USD costs

Deterministic scam checklist with verdict + evidence (spam flags, copymint collision, concentration) — cached ≤24h

Full OFAC dossier for one ent_num: aliases, addresses, programs, extracted identifiers (DOB, passports, IMO, crypto addresses), vessel/aircraft detail, remarks

Pokemon species data — base stats, types, abilities, evolutions & generation-aware Pokedex record as structured JSON for game agents

Fetch a parsed 8-K

Fetch a parsed 10-Q

Token safety & rug-pull/honeypot risk check — scans an ERC-20's bytecode & ownership on Base/Ethereum for mint, blacklist, pause, fee traps

Render a URL in a headless browser → clean LLM-ready markdown

Fetch a parsed 10-K

Deterministic 8-bit SFX synthesis from a preset + seed — base64 WAV plus the reproducible SFXR parameter block

Current gas market for one chain — bid-ready EIP-1559 fees + USD costs

One EUR-triangulated cross-rate with inverse and auditable EUR legs, latest or any date back to 1999

Multi-record DNS summary (A/AAAA/CNAME/MX/NS/TXT/SOA/CAA + SPF/DMARC) over DoH — ALWAYS live

Mutate a known-good seed's sound (classic sfxr mutate) — nearby variations by parameter perturbation

Newest headlines from a deduped multi-source pile (GDELT + Hacker News + major RSS + Google News), newest first — filter by category, source, and language

All SEC Form 4 insider transactions for one issuer (ticker or CIK), newest first, within a txn-date window

DEX swap price quote — indicative UniswapV2 amount-out, price & price-impact for any token pair from live on-chain reserves on Base/Ethereum

One reporting owner's SEC Form 4 transactions across every issuer they file for — track serial founders, activists, and fund principals

Aggregate insider-flow analytics for one issuer — open-market buy vs sell net flow, non-open-market breakdown, cluster-buy detection, and a per-insider ledger

Base-fee trajectory + congestion over up to 1024 blocks

Convert an amount between any two covered currencies at an ECB fixing (latest or dated) — the invoicing workhorse

EIP-4844 blob-gas market (Ethereum L1)

Fetch a Pokémon species

Fetch a block

Fetch a parsed 10-K

Full EDGAR offering timeline for one issuer — registration, amendments, EFFECT, 8-A12B and 424(b) with parsed terms

Full rate snapshot on a historical fixing date back to 1999 — month-end revaluation staple; weekend dates substitute the prior fixing, flagged

Per-pair fixing series over a date range (daily/weekly/monthly) with min/max/avg/change stats, back to 1999

USD cost of a specific tx incl. OP-stack L1 data fee

DEX swap price quote — indicative UniswapV2 amount-out, price & price-impact for any token pair from live on-chain reserves on Base/Ethereum

Validate & normalize one phone number — E.164, line type, region, verdict (pure CPU, zero upstream)

Fetch a parsed 10-K

Current conditions (temp, feels-like, wind, precip) for a place or coordinate

RDAP registration card (dates, registrar, statuses, nameservers, DNSSEC) + derived flags + inline DNS summary — cached ≤24h